A preset message stating, "Sent from my iPhone/BlackBerry, etc." is fine to use.
Going Offline
Lastly, there comes a time in every inbox when reply or forward won't suffice. If a conversation is going downhill fast, pick up the phone or set an in-person meeting. Research has shown we default to a negative interpretation of others' words when we don't have their tone of voice or body language to make their meaning clear
the recipient is still worth a salutation and closing: "Dear" remains both standard and formal, "Hello" is professional and friendly, "Hi" is casual and conversational.
Follow the same pattern in an email that you would face-to-face if your new client has been introduced to you as Brian, or if that is what the rest of the team calls him, you don't need to revert to Mr Carson in a follow-up email.
Whether you think email communication is good or bad, it's here to stay, and how you compose an email speaks to your professionalism, reliability, and personal image. So here are some tips on how to manage this vital tool.